Interesting. Sounds like that might have to be settled in court.
According to the Republican National Convention Blog, this is what Rush said:
RUSH: What does it say about the college co-ed Sandra Fluke, who goes before a congressional committee and essentially says that she must be paid to have sex, what does that make her? It makes her a slut, right? It makes her a prostitute. She wants to be paid to have sex. She's having so much sex she can't afford the contraception. She wants you and me and the taxpayers to pay her to have sex. What does that make us? We're the pimps. (interruption) The johns? We would be the johns? No! We're not the johns. (interruption) Yeah, that's right. Pimp's not the right word. Okay, so she's not a slut. She's "round heeled." I take it back.
So Rush assigned humorous descriptions to the actors in this play and provided humorous speculation about their motives. In context, he was clearly not referring to Fluke's actual sexual proclivities, and he was not being serious. Also, he retracted the word "slut" almost immediately after he used it.
...she will be paid off where she can continue doing her nasty work.
Yes. Rush's comments have probably dramatically increased her income and improved her social life. Where are the damages?